Sad-iron.



No. 669,749. Patented Mar. l2, |90l.

c. T. JoHNsnN.

4SAI] IRUN.

(Applicnt'iun led Apr. 11, 1900`) (No Model.)

I iz/Hesss' 517245? *STATES CHARLES T. JOHNSON, OF STOUGHTON, WISCONSIN.-

SAD-IRON.

SPECIFICATION forming part of Letters Patent No. 669,749, dated March 12, 1901. Application filed April 11, 1900. Serial No. 12,396. (No model.)

To all when@ it may concern:

Be it known that I, CHARLES T. JOHNSON, a citizen of the United States, residing at Stoughton, county of Dane, and State of Wisconsin, have invented new and useful Improvements in Sad-Irons, of which the following is a specification.

My invention relates to improvements in that class of sad-irons which are provided with detachable handles; and it pertains more especially, first, to a device for preventing the radiation of heat from the smoothing-core, consisting of a permanently-attached shell which incloses the smoothing-core at the top and practically upon all sides, excepting the smoothing-surface, and the intervening nonheating conductor located between the shell and the core, whereby the radiation of heat from the core is retarded.

My invention pertains, second, to the device for attaching the handle to the shell.

The construction of my invention is eX- plained by reference to the accompanying drawings, in which- Figure l represents a longitudinal vertical section of the in vention, showing one form of mechanism for attaching the handle to the core. Fig. 2 is a horizontal section drawn on line a; a; of Fig. l.

Like parts are identified by the same reference-letters throughout both views.

A represents the smoothing-core, which is preferably provided with a'narrow bead or bearing B around the lower marginal edge, against which the lower edge of the inclosing shell C impinges.

D is the smoothing-surface of the core.

The shell C is made slightly larger than the core A, whereby an intervening space E is left between such parts, which when not otherwise filled forms a dead-air chamber for preventing the radiation of heat from the core. The space Eis, however, preferably partially filled with an asbestos lining For other similar non-heat-conducting substance, which cooperates with the confined air in retarding the radiation of heat, the object of my invention being to provide a non-heat-conducting substance-such as confined air, asbestos, or other similar substance-between the core and the permanently-attached shell.

The shell O is permanently secured to the core A by the retaining bolts or screws G G. The asbestos lining F is secured to the shell at intervals by the thin metallic fastening strips H H and rivets I.

It is obvious that the handle K may be secured to the shell in a great variety of ways, and I do not, therefore, limit myself to the peculiar mechanism shown for such purpose. A preferred form of fastening attachments, however, is shown in Fig. l, which consists in a bracket J, to'which the handle K is rigidly attached bythe screwsLL. The bracket J is provided with a recess or chamber M for the reception of the sliding locking-bolt N, which bolt N is retained in said recess by the actuating-handle O, which handle O passes through an elongated slot P of the bracket, which slot limits the longitudinal movement of said locking-bolt. The protruding end of said bolt N is beveled, so as to be thrown inwardly whenpressed downwardly upon the beveled edge Q of the shell. When said bolt is brought in place beneath the inner surface of said shell, it is thrown outwardly by the recoil of the spiral spring R, which is in terposed between the inner end of said sliding bolt and the opposing wall of said recess M. The end of the bracket J opposite the protruding of said sliding bolt is provided with a shoulder S,which engages beneath the inner wall of the inclosing shell, as indicated at T. Thus it is obvious that when desirous to attach the handle to the shell it is necessary7 simply to first enter the shoulderS beneath the shell at T and press downwardly upon the handle,when said sliding bolt will be thrown inwardly by contact with the beveled surface of the shell until the handleis brought in place parallel with the shell,when s'aid bolt N will be thrown forwardly by the recoil of said spring R and the handle thereby locked in place. When desirous to detach the handle from the shell, it is necessary simply to draw back said sliding bolt N, which is readily accomplished by the finger of the operator, which is brought to bear against the actuating-arm O.

It will be understood that with this class of iron a single handle is used with several cores and that the cores and shells remain permanently secured together, the handle only being detachable.

Having thus described my invention, what IOO I claim as new, and desire to secure by Letters Patent, is-

l. In a sad-iron, the combination of a core provided with a smoothing-surface; a permanently-attached shell adapted to inclose the core, with the exception of the smoothing-surface and a narrow bead or bearing around the edge thereof; a non-heat-conductor located between the shell and core; and a fastening adapted to temporarily bind the handle and shell together, substantially as described.

2. In a sad-iron, the combination of a core provided with a smoothing-surface; a permanently-attached shell adapted to inclose the core, with the exception of the smoothing-surface and a narrow bead or bearing around the edge thereof; a fastening for temporarily holdingthe handle and shell together; a dead-air space; a non-heat-conducting lining secured to said shell and surrounding the inclosed portion of the core and partially filling said dead-air space, said shell being adapted to impinge upon said bead or bearing at its lower edge, and together with said lining and said dead-air space, to form a heat-retaining barrier, substantially as described.

3. In a sad-iron, the combination of a core provided with a smoothing-surface; a permanently-attached shell adapted to inclose the core, with the exception of the smoothing-surface and a narrow bearing around the edge thereof; a fastening for temporarily holding the handle and shell together; and a non-heat-conducting lining secured to said inclosing shell at intervals, by metallic fastenings, substantially as and for the purpose set forth.

4. In a sad-iron, the combination of a core vprovided with a smoothing-surface; a permanently-attached shell adapted to inclose the core, with the exception of the smoothing-surface and a narrow bead or bearing around the edge thereof; a non-heat-conductor located between the shell and core; and afastening adapted to temporarily bind said handle and shell together, consisting of a bracket J rigidly aftixed to the handle, said bracket being provided with a recess M, sliding bolt N, actuating-handleO afxed at one end to said sliding bolt and protruding through a slot in said bracket, and spiral spring R interposed between the inner end of said sliding bolt and the opposing Wall of said recess, all substantially as and for the purpose specified.

In testimony whereof I affix my signature in the presence of two Witnesses.

CHARLES T. JOHNSON.

Witnesses:

ERLING` K. LovERUD, A. L. THoRWIoK. 

